lane assist MERCEDES-BENZ GLC 2018 Owners Manual

1, 2, 3 ...4ETS (Electronic Traction System)
see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 187
12 V socket
see Socket (12 V)
115 V socket ...................................... 305
360° camera
Cleaning ........................................ .3 28
Display in the multimedia system .. 201
Function/notes ............................ .1 99
AABS (Anti-lock Braking System)
Display message ............................ 240
Function/notes ................................ 66
Warning lamp ................................. 271
Accident
Automatic measures after an acci-
dent ................................................. 59
Accident warning
see Driving safety system
Activating media mode
General notes ................................ 288
Activating/deactivating cooling
with air dehumidification ................. 128
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 232
Display message ............................ 258
Function/notes ............................ .2 09
Active Brake Assist
Activating or deactivating .............. 232
Display message ............................ 245
Function/notes ................................ 67
Active Brake Assist with cross-
traffic function
Activating or deactivating .............. 232
Display message ............................ 246
Function/notes ................................ 73
Important safety notes .................... 74
Warning lamp ................................. 277 Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 233
Display message ............................ 257
Function/information .................... 212
Active light function
Display message ............................ 251
ADAPTIVE BRAKE ................................. 73
Adaptive Brake Assist
Function/notes ................................ 68
Adaptive Damping System
Function/notes ............................. 186
Adaptive Damping System with
continuous damping adjustment
(ADS PLUS) ........................................ 184
Adaptive Highbeam Assist
Display message ............................ 252
Function/notes ............................. 114
Switching on/off ........................... 115
Additional speedometer ................... 235
Additives (engine oil) ........................ 380
Address book
see also Digital Operator's Man-
ual .................................................. 280
Adjusting the volume
Multimedia system ........................ 281
Air bags
Depl oyment ..................................... 56
Di sp
lay message ............................ 249
Front air bag (driver, front
passenger) ....................................... 50
Important safety notes .................... 49
Introduction ..................................... 49
Knee bag .......................................... 51
Occupant Classification System
(OCS) ............................................... 52
PASSENGER AIR BAG indicator
lamps ............................................... 45
Side impact air bag .......................... 51
Window curtain air bag .................... 51
AIR BODY CONTROL
Display message ............................ 256
Function/notes ............................. 184
Lowering the rear of the vehicle .... 186
Raising the rear of the vehicle ....... 186
Setting the normal vehicle level ..... 186
Setting the raised vehicle level ...... 1854
Index

Driving downhil l ................................ 16 8
Driving in mountainous terrain
Approach/departur e angle ............ 16 8
Driving off-road
Drivin g downhill ............................ .1 68
see Off-road driving
Driving on flooded roads .................. 165
Driving safety system
Active Brake Assist .......................... 67
Crosswind Assist ............................ .7 3
Driving safet y systems
AB S (Anti-loc k Braking System) ...... .6 6
Active Brake Assist with cross-
traffic function ................................. 73
ADAPTIVE BRAKE ............................. 73
Adaptive Brake Assist ...................... 68
BAS (Brake Assist System) .............. 67
Distance warning function ............... 67
EBD (electronic brake force distri-
bution) ............................................. 73
ESP ®
(Electronic Stability Pro-
gram) ............................................... 69
Important safety information ........... 66
Overview .......................................... 66
STEER CONTROL ............................. 76
Driving system
AIR BODY CONTROL ...................... 184
AMG sports suspension based on
AIR BODY CONTROL ...................... 186
Distance Pilot DISTRONIC ............. 170
Distance Pilot DISTRONIC with
Steering Pilot ................................. 177
Off-road program ........................... 181
Parking assist PARKTRONIC .......... 191
Parking Pilot .................................. 188
RACE START (Mercedes-AMG
vehicles) ........................................ 183
Driving systems
360°camera .................................. 199
Active Blind Spot Assist ................. 209
Active Lane Keeping Assist ............ 212
ATTENTION ASSIST ........................ 203
Blind Spot Assist ............................ 205
Cruise control ................................ 169
Display message ............................ 256
Driving Assistance Plus package ... 209
HOLD function ............................... 178
Lane Ke eping Assist ...................... 207 Lane
Tracking package .................. 205
Rear view camera .......................... 194
Traffic Sign Assist .......................... 205
Driving tips
Automatic transmission ................. 149
Brakes ........................................... 163
Break-in period .............................. 135
Distance Pilot DISTRONIC ............. 176
Downhill gradient ........................... 163
Drinking and driving ....................... 161
Driving in winter ............................. 165
Driving on flooded roads ................ 165
Driving on sand .............................. 167
Driving on wet roads ...................... 164
Exhaust check ............................... 161
Fuel ................................................ 161
General .......................................... 160
Hydroplaning ................................. 164
Icy road surfaces ........................... 165
Important safety notes .................. 135
Limited braking efficiency on sal-
ted roads ....................................... 163
Off-road driving .............................. 165
Snow chains .................................. 351
Subjecting brakes to a load ........... 163
The first 1000 miles (1500 km) ..... 135
Tire ruts ......................................... 167
Towing a trailer .............................. 215
Traveling uphill ............................... 168
Wet road surface ........................... 163
DSR (Downhill Speed Regulation)
Display message ............................ 259
Function/notes ............................. 180
DVD video
Operating (on-board computer) ..... 229
see also Digital Operator's Man-
ual .................................................. 280
DYNAMIC SELECT switch
Automatic transmission ................. 144
Climate control (dual-zone auto-
matic climate control) .................... 127
E
EASY-ENTRY feature
Function/notes ............................. 106
EASY-EXIT feature
Function/notes ............................. 10610
Index

Removin g th e Start/Sto p butto n ... 137
Start function ................................... 80
Unlocking ......................................... 79
Kickdown
Driving tips .................................... 149
Manual gearshifting ....................... 154
Knee bag .............................................. 51
LLamps
see Warning and indicator lamps
Lane Change Assist
see Active Blind Spot Assist
Lane detection (automatic)
see Lane Keeping Assist
Lane Keeping Assist
Activating/deactivating ................. 208
Activating/deactivating (on-
board computer) ............................ 233
Display message ............................ 257
Function/information .................... 207
see Active Lane Keeping Assist
Lane Tracking package ..................... 205
Lap time (RACETIMER) ...................... 237
LATCH-type (ISOFIX) child seat
anchors ................................................ 62
Level control
Display message ............................ 257
see AIR BODY CONTROL
License plate lamp (display mes-
sage) ................................................... 251
Light function, active
Display message ............................ 251
Light switch
Operation ....................................... 112
Lights
Adaptive Highbeam Assist ............. 114
Automatic headlamp mode ............ 112
Cornering light function ................. 114
Fogged up headlamps .................... 115
General notes ................................ 112
Hazard warning lamps ................... 114
High beam flasher .......................... 113
High-beam headlamps ................... 113
Light switch ................................... 112
Low-beam headlamps .................... 113
Parking lamps ................................ 113 Rear fog lamp ................................ 113
Setting exterior lighting ................. 112
Standing lamps .............................. 113
Switching the daytime running
lamps on/off (on-board com-
puter) ............................................. 234
Turn signals ................................... 113
see Interior lighting
Loading guidelines ............................ 290
Locking
see Central locking
Locking (doors)
Automatic ........................................ 85
Emergency locking ........................... 85
From inside (central locking but-
ton) .................................................. 84
Locking centrally
see Central locking
Low-beam headlamps
Display mes sage ............................ 251
Re
placing bulbs ............................. 117
Switching on/off ........................... 113
Lumbar support
Adjusting the 4-way lumbar sup-
port ................................................ 103
M
M+S tires ............................................ 351
Malfunction message
see Display messages
Matte finish (cleaning instruc-
tions) .................................................. 326
mbrace
Call priority .................................... 310
Display message ............................ 245
Downloading destinations
(COMAND) ..................................... 311
Downloading routes ....................... 313
Emergency call .............................. 308
General notes ................................ 307
Geo fencing ................................... 314
Info call button .............................. 310
Locating a stolen vehicle ............... 312
Remote fault diagnosis .................. 312
Remote vehicle locking .................. 312
Roadside assistance button ........... 309
Search & Send ............................... 31114
Index

Self-test ......................................... 308
Speed alert .................................... 313
System .......................................... 307
Triggering the vehicle alarm ........... 314
Vehicle remote unlocking .............. 312
Mechanical key
Function/notes ................................ 80
General notes .................................. 80
Inserting .......................................... 80
Locking vehicle ................................ 85
Removing ......................................... 80
Unlocking the driver's door .............. 85
Media Interface
see Digital Operator's Manual
Memory card (audio) ......................... 229
Memory function
Seats, steering wheel, exterior
mirrors ........................................... 110
Mercedes-Benz Intelligent Drive
360°camera .................................. 199
Active Blind Spot Assist ................. 209
Active Lane Keeping Assist ............ 212
ATTENTION ASSIST ........................ 203
Blind Spot Assist ............................ 205
Distance Pilot DISTRONIC ............. 170
Distance Pilot DISTRONIC with
Steering Pilot ................................. 177
General notes ................................ 169
Lane Keeping Assist ...................... 207
Parking Assist PARKTRONIC .......... 191
Parking Pilot .................................. 188
PRE-SAFE ®
(anticipatory occu-
pant protection) ............................... 58
PRE-SAFE ®
PLUS (anticipatory
occupant protection PLUS) .............. 59
Rear view camera .......................... 194
Traffic Sign Assist .......................... 205
Message memory (on-board com-
puter) .................................................. 239
Messages
see Display messages
see Warning and indicator lamps
Mirror turn signal
Cleaning ......................................... 327
Mirrors
see Exterior mirrors
see Vanity mirror (in the sun visor) Mobile phone
Connecting (device manager) ........ 287
Frequencies ................................... 375
Installation ..................................... 375
Menu (on-board computer) ............ 230
Transmission output (maximum) .... 375
Modifying the programming
(SmartKey) ........................................... 80
MOExtended tires .............................. 334
Mou nting wheels
Lowe ring the vehicle ...................... 373
Mounting a new wheel ................... 372
Preparing the vehicle ..................... 370
Raising the vehicle ......................... 370
Removing a wheel .......................... 372
Securing the vehicle against roll-
ing away ........................................ 370
MP3
Operation ....................................... 229
see also Digital Operator's Man-
ual .................................................. 280
Multifunction display
Function/notes ............................. 222
Multifunction steering wheel
Operating the on-board compute r. .2 21
Overview .......................................... 38
Multimedia system
Switching on and off ..................... .2 81
Music files
see also Digital Operator's Man-
ual ................................................. .2 80
N
Navigation
Displaying (on-board computer) ..... 226
Menu (on-board computer) ............ 226
see also Digital Operator's Man-
ual ................................................. .2 80
Notes on breaking-in a new vehi-
cle ....................................................... 135
O
Occupant Classification System
(OCS)
Conditions ....................................... 52
Faults ............................................... 55 Index 15

Instrument cluster display ............ .2 05
Trailer coupling
see Towing a trailer
Trailer loads and drawbar nose-
weights ............................................... 218
Trailer towing
Active Lane Keeping Assist ............ 214
Blind Spot Assist ............................ 207
Permissible trailer loads and
drawbar noseweights ..................... 218
Transfer case ..................................... 155
Transmission
Display message ............................ 265
see Automatic transmission
Transmission oil
Temperature (on-board computer,
Mercedes-AMG vehicles) .............. .2 35
Transmission position display ......... 148
Transporting the vehicle .................. 346
Traveling uphill
Brow of hill ..................................... 168
Driving downhill ............................ .1 68
Maximum gradient-climbing capa-
bility ............................................... 168
Trim pieces (cleaning instruc-
tions) ................................................. .3 30
Trip computer (on-board com-
puter) ................................................. .2 25
Trip odometer
Calling up ....................................... 224
Resetting (on-board computer) ...... 226
Trunk
see Cargo compartment
Turn signals
Display message ............................ 251
Replacing bulbs (front) ................... 118
Switching on/off ........................... 113
Two-way radio
Frequencies ................................... 375
Installation ..................................... 375
Transmission output (maximum) .... 375
Type identification plate
see Vehicle identification plate
U
Unlocking
Emergency unlocking ....................... 85 From inside the vehicle (central
unlocking button) ............................. 84
USB devices
Connecting to the Media Inter-
face ............................................... 289
V Vanity mirror (in the sun visor) ........ 303
Vehicle
Correct use ...................................... 32
Data acquisition ............................... 33
Display message ............................ 264
Electronics ..................................... 375
Equipment ....................................... 29
Individual settings .......................... 231
Limited Warranty ............................. 33
Loading .......................................... 359
Locking (in an emergency) ............... 85
Locking (SmartKey) .......................... 78
Lowering ........................................ 373
Maintenance .................................... 30
Operating safety .............................. 31
Operation outside the USA/
Canada ............................................ 30
Parking .......................................... 158
Parking for a long period ................ 160
Pulling away ................................... 139
Raising ........................................... 370
Reporting problems ......................... 32
Securing from rolling away ............ 370
Technical data ............................... 375
Towing away .................................. 343
Transporting .................................. 346
Unlocking (in an emergency) ........... 85
Unlocking (SmartKey) ...................... 78
Vehicle data ................................... 382
Vehicle data
Dimensions .................................... 382
Vehicle data (off-road driving)
Approach/departure angle ............ 384
Maximum gradient climbing abil-
ity .................................................. 384
Maximum water depth ................... 383
Vehicle emergency locking ................ 85
Vehicle identification number
see VIN
Vehicle identification plate .............. 37624
Index

Drivin g safet y systems
Overview of drivin g safet y systemsIn this section , you will fin d information about
th e followin g drivin g safet y systems :R
AB S ( A n ti-loc k B rakin g S ystem)
( Y
page 66)R
BA S ( B rak e A ssist S ystem) ( Y
page 67)R
Active Brak e Assis t ( Y
page 67 )R
ES P ®
( E lectronic S t ability P r ogram)
( Y
page 69)R
EB D ( E lectroni c B rak e forc e D istribution )
( Y
page 73 )R
ADAPTIV E BRAKE ( Y
page 73 )R
Active Brak e Assis t wit h cross-traffic function
( Y
page 73)R
STEE R CONTROL ( Y
page 76 )
Important safet y notesIf you fail to adapt your drivin g style or if you are
inattentive , th e drivin g safet y systems can nei-
ther reduce th e ris k of an acciden t no r override
th e laws of physics. Driving safet y systems are
merely aids designed to assist driving. You are
responsible fo r maintainin g th e distanc e to th e
vehicle in front, fo r vehicle speed, fo r braking in
goo d time, and fo r stayin g in lane. Always adapt
your drivin g style to suit th e prevailin g road and
weather condition s and maintain a saf e distanc e
from th e vehicle in front. Drive carefully.
The drivin g safet y systems described only wor k
as effectively as possible when there is ade-
quat e contact between th e tires and th e road
surface. Pay particular attention to th e informa-
tion regardin g tires , recommended minimum
tire tread depths etc. in th e "Wheels and tires "
section ( Y
page 349).
In wintr y drivin g conditions, always use winte r
tires (M+ S tires )a nd if necessary, snow chains.
Only in this way will the driving safety systems
described in this section work as effectively as
possible. ABS (Anti-lock Braking System)
General information ABS regulates brake pressure in such a way that
the wheels do not lock when you brake. This
allows you to continue steering the vehicle when
braking.
The % ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface conditions.
ABS works on slippery surfaces, even when you
only brake gently.
Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 66).
G WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp ( Y
page 271) and dis-
play messages which may be shown in the
instrument cluster ( Y
page 240).
Braking X
If ABS intervenes: continue to depress the
brake pedal vigorously until the braking sit-
uation is over. X
To make a full brake application: depress
the brake pedal with full force.
If ABS intervenes when braking, you will feel a
pulsing in the brake pedal.
The pulsating brake pedal can be an indication
of hazardous road conditions, and functions as a
reminder to take extra care while driving.66
Driving safety systems
Safety

the vehicle/trailer combination from swerv-
ing. Trailers with a high center of gravity can
tip over before ESP ®
can detect this. There is
a risk of an accident.
Always adapt your driving style to the prevail-
ing road and weather conditions.
If your vehicle with trailer (vehicle/trailer com-
bination) begins to lurch, you can only stabilize
the vehicle/trailer combination by depressing
the brake firmly.
ESP ®
trailer stabilization is active above speeds
of approximately 40 mph (65 km/h).
ESP ®
trailer stabilization does not work if ESP ®
is deactivated or malfunctioning.
Crosswind Assist General information Strong crosswind gusts can impair the ability of
your vehicle to drive straight ahead. The cross-
wind driving assistance function integrated in
ESP ®
noticeably reduces these impairments.
ESP ®
intervenes automatically according to the
direction and intensity of the crosswinds affect-
ing your vehicle.
ESP ®
intervenes with stabilizing braking to
assist you in keeping the vehicle in the lane.
Crosswind Assist is active at vehicle speeds
above 50 mph (80 km/h) when driving straight
ahead or cornering gently.
Important safety notes
Crosswind Assist does not work if ESP ®
is
switched off or deactivated because of a mal-
function.
EBD (electronic brake force distribu-
tion)
General information
EBD monitors and controls the brake pressure
on the rear wheels to improve driving stability
while braking. Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 66).
G WARNING
If EBD is malfunctioning, the rear wheels can
lock, e.g. under full braking. This increases the
risk of skidding and an accident.
You should therefore adapt your driving style
to the different handling characteristics. Have
the brake system checked at a qualified spe-
cialist workshop.
Observe information regarding indicator and
warning lamps ( Y
page 271) as well as display
messages ( Y
page 242).
ADAPTIVE BRAKE ADAPTIVE BRAKE enhances braking safety and
offers increased braking comfort. In addition to
the braking function, ADAPTIVE BRAKE also has
the HOLD function ( Y
page 178) and hill start
assist ( Y
page 140).
Active Brake Assist with cross-traffic
function
General information
i Observe the important safety notes in the
"Driving safety systems" section ( Y
page 66).
Active Brake Assist with cross-traffic function
can help you to minimize the risk of a collision
with a vehicle in front or a pedestrian and reduce
the effects of such a collision. If the Active Brake
Assist with cross-traffic function detects a risk
of collision, you will be warned visually and
acoustically and, if necessary, your brake appli-
cation will be assisted according to the situa-
tion. If you do not react, the system can also
react by braking automatically. In the event of a
detected risk of collision due to crossing traffic,
you will also be visually and acoustically warned
as well as assisted by the brake boosting effect
according to the situation.
Active Brake Assist with cross-traffic function is
only available in vehicles with the Driving Assis-
tance Plus package.Driving safet y system s 73
Sa fety Z

Drivin g systems
Mercedes-Benz Intelligent Drive Mercedes-Ben z Intelligen t Drive stand s fo r inno -
vative driver assistanc e and safet y systems
whic h enhance comfor t and suppor t th e driver in
critical situations. Wit h these intelligen t coordi-
nated systems Mercedes-Ben z has set a mile-
ston e on th e pat h toward s autonomous driving.
Mercedes-Ben z Intelligen t Drive embraces all
elements of active and passive safet y in on e well
though t out syste m – fo r th e safet y of th e vehi-
cl e occupant s and that of other road users.
Further information on drivin g safet y systems
( Y
page 66).
Cruis e contro l
General notes Cruise contro l maintain s a constant road speed
fo r you. It brake s automatically in order to avoid
exceedin g th e set speed. Change into a lowe r
gear in goo d time on lon g and steep downhill
gradients. Thi s is especially important if th e
vehicle is lade n or towin g a trailer . By doin g so,
you will mak e use of th e braking effect of th e
engine. Thi s relieves th e load on th e brake sys -
te m and prevents th e brake s from overheatin g
and wearin g to o quickly.
Use cruise contro l only if road and traffic con-
dition s mak e it appropriat e to maintain a steady
speed fo r a prolonged period. You can stor e any
road speed abov e 20 mph (30 km/h).
Important safet y notesCruise contro l can neither reduce th e ris k of an
acciden t if you fai l to adapt your drivin g style no r
override th e laws of physics. Cruise contro l can -
no t take into accoun t th e road, traffic and
weather conditions. Cruise contro l is only an
aid. You are responsible fo r maintainin g a saf e
distanc e to th e vehicle in front, fo r vehicle
speed, fo r braking in goo d time and fo r stayin g in
lane. Do no t use cruise control: R
in road and traffic condition s whic h do no t
allow you to maintain a constant speed, e.g. in
heav y traffic or on windin g roadsR
on slipper y road surfaces. Brakin g or accel-
erating could cause th e drive wheels to los e
traction and th e vehicle could then skid R
when there is poo r visibility, e.g. due to fog,
heav y rain or snow
If there is a chang e of drivers, advise th e ne w
driver of th e speed stored.
i The speed indicated in th e speedometer
may diffe r slightly from th e speed stored.
Cruis e contro l lever
C
Activates or increase s speedD
Activates or reduce s speed

Distance Pilo t DISTRONI C wit h Steering
Pilo tGeneral notes
Distanc e Pilo t DISTRONIC wit h Steerin g Pilo t
aids you in keepin g th e vehicle in th e middle of
th e lan e by means of moderat e steerin g inter-
vention s in a speed range from 0 – 12 5 mph
(0 - 20 0 km/h).
It monitors th e are a in fron t of your vehicle by
means of multifunction camera C , fixed at th e
to p of th e windshield .
In a speed range from 0 - 37 mph (0 - 60 km/ h) ,
Steering Pilot focuses on the vehicle in front,
taking into account lane markings, e.g. when
following vehicles in a traffic jam.
At speeds of more than 37 mph (60 km/h),
Steering Pilot focuses on clear lane markings
(left and right), focusing on the vehicle in front
only if clear lane markings are not present.
If these conditions are not present, Steering
Pilot cannot provide assistance.
Distance Pilot DISTRONIC must be active in
order for the function to be available.
Important safety notes
Distance Pilot DISTRONIC and Steering Pilot can
neither reduce the risk of an accident if you fail
to adapt your driving style nor override the laws
of physics. Distance Pilot DISTRONIC with
Steering Pilot cannot take into account road,
weather or traffic conditions. Distance Pilot
DISTRONIC with Steering Pilot is only an aid.
You are responsible for maintaining a safe dis-
tance to the ve hi
cle in front, for vehicle speed,
for braking in good time and for staying in lane.
Distance Pilot DISTRONIC with Steering Pilot
does not detect road and traffic conditions and
does not detect all road users. If you are follow-
ing a vehicle which is driving towards the edge of
the road, your vehicle could come into contact with the curb or other road boundaries. Be par-
ticularly aware of other road users, e.g. cyclists,
that are directly next to your vehicle.
Obstacles such as traffic markers on a con-
struction site that are on the lane or projecting
out into the lane are not detected.
An inappropriate steering intervention, e.g. after
intentionally driving over a lane marking, can be
corrected at any time if you steer slightly in the
opposite direction.
DISTRONIC PLUS with Steering Pilot cannot
continuously keep your vehicle in lane. In some
cases, steering intervention is not sufficient to
bring the vehicle back to the lane. In such cases,
you must steer the vehicle yourself to ensure
that it does not leave the lane.
The system may be impaired or may not function
if: R
there is poor visibility, e.g. due to insufficient
illumination of the road, or due to snow, rain,
fog or spray R
there is glare, e.g. from oncoming traffic, the
sun or reflection from other vehicles (e.g. if
the road su rface i s wet) R
the windshield is dirty, fogged up, damaged or
covered, for instance by a sticker, in the vicin-
ity of the camera R
there are no or several unclear lane markings
for one lane, e.g. roadworks R
the lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow R
the distance to the vehicle in front is too short
and thus the lane markings cannot be detec-
ted R
the lane markings change quickly, e.g. lanes
branch off, cross one another or merge R
the road is narrow and winding R
there are highly variable shade conditions on
the roadway
The system is switched to passive and no longer
assists you by performing steering interventions
if: R
you actively change lane R
you switch on the turn signal R
you take your hands off the steering wheel or
do not steer for a prolonged period of time
After you have finished changing lanes, Steering
Pilot is automatically active once more.Driving systems 177
Driving and parking Z

The electric parking brake secures the vehicle
automatically if the HOLD function is activated
when the vehicle is stationary and: R
a system malfunction occurs R
the power supply is insufficient
If a malfunction occurs, the transmission may
also be shifted to position ] automatically.
DSR
General notes DSR (Downhill Speed Regulation) is an aid to
assist you when driving downhill that is available
only in vehicles with the Off-Road Engineering
package.
It keeps the speed of travel at the speed selec-
ted on the on-board computer. The steeper the
downhill gradient, the greater the DSR braking
effect on the vehicle. When driving on flat
stretches of road or on an uphill gradient, the
DSR braking effect is minimal or nonexistent.
DSR controls the vehicle’s speed when it is acti-
vated and the transmission is in position [ , ^
or \\ . You can drive at a higher or a lower speed
than that set on the on-board computer at any
time by accelerating or braking.
Important safety notes
G WARNING
If the speed driven and the set speed deviate
and you activate DSR on a slippery road sur-
face, the wheels may lose traction. There is an
increased danger of skidding and accidents.
Before switching DSR on, please take into
consideration the road surface and the differ-
ence between driving speed and the set
speed.
DSR can neither reduce the risk of accident if
you fail to adapt your driving style nor override
the laws of physics. DSR cannot take account of
road, weather and traffic conditions. DSR is only
an aid. You are responsible for maintaining a
safe distance to the vehicle in front, for vehicle
speed, for braking in good time and for staying in
lane.
You are always responsible for keeping control
of the vehicle and for assessing whether the
downhill gradient can be managed. DSR may not always be able to keep to the set speed, depend-
ing on road surface and tire conditions. Select a
set speed suitable for the prevailing conditions
and when necessary, apply the brakes manually.
Further information about "Driving off-road"
( Y
page 165).
Activating/deactivating DSR If you activate DSR and no speed has been set,
the vehicle decelerates to 4 mph (6 km/h).
You can activate DSR only when driving at
speeds below 25 mph (40 km/h).
X
To switch on: press button C .
Indicator lamp D lights up.
The status indicator on the multifunction dis-
play shows e.g. DSR 6 km/h .
If the current vehicle speed is too high, the DSR
symbol appears on the multifunction display
with the Max. Speed 40 km/h message.
If you enter or exit a parking space using Parking
Pilot and press button C , indicator lamp D
flashes. DSR can then not be switched on. X
To switch off: press button C .
Indicator lamp D goes out.
The DSR symbol appears on the multifunction
display with the Off message.
DSR switches off automatically if you drive at
speeds greater than 28 mph (45 km/h). The
DSR symbol appears on the multifunction dis-
play with the Off message. A warning tone also
sounds.180
Driving systems
Driving and parking